EP3146549B1 - Disjoncteur - Google Patents

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Publication number
EP3146549B1
EP3146549B1 EP15723511.0A EP15723511A EP3146549B1 EP 3146549 B1 EP3146549 B1 EP 3146549B1 EP 15723511 A EP15723511 A EP 15723511A EP 3146549 B1 EP3146549 B1 EP 3146549B1
Authority
EP
European Patent Office
Prior art keywords
contact arm
contact
circuit breaker
rocker
jump
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP15723511.0A
Other languages
German (de)
English (en)
Other versions
EP3146549A1 (fr
Inventor
Adolf Tetik
Nikola BOJANIC
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eaton Intelligent Power Ltd
Original Assignee
Eaton Intelligent Power Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Eaton Intelligent Power Ltd filed Critical Eaton Intelligent Power Ltd
Publication of EP3146549A1 publication Critical patent/EP3146549A1/fr
Application granted granted Critical
Publication of EP3146549B1 publication Critical patent/EP3146549B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
    • H01H5/04—Energy stored by deformation of elastic members
    • H01H5/14—Energy stored by deformation of elastic members by twisting of torsion members
    • H01H5/16—Energy stored by deformation of elastic members by twisting of torsion members with auxiliary means for temporarily holding parts until torsion member is sufficiently strained
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H21/00—Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
    • H01H21/02—Details
    • H01H21/18—Movable parts; Contacts mounted thereon
    • H01H21/22—Operating parts, e.g. handle
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H21/00—Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
    • H01H21/02—Details
    • H01H21/18—Movable parts; Contacts mounted thereon
    • H01H21/36—Driving mechanisms
    • H01H21/40—Driving mechanisms having snap action
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • H01H71/526—Manual reset mechanisms which may be also used for manual release actuated by lever the lever forming a toggle linkage with a second lever, the free end of which is directly and releasably engageable with a contact structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2205/00—Movable contacts
    • H01H2205/002—Movable contacts fixed to operating part
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2300/00—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H
    • H01H2300/046—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H using snap closing mechanisms
    • H01H2300/048—Snap closing by latched movable contact, wherein the movable contact is held in a minimal distance from the fixed contact during first phase of closing sequence in which a closing spring is charged

Definitions

  • the invention relates to a switching device according to the preamble of claim 1.
  • a manually operable element for closing the switch contacts and forming a conductive current path through the switching device usually a movable switching contact, which is mechanically coupled to the manual switch button, by the movement of the manual switch button continuously to a housing-fixed switching contact approximated until the two switch contacts mechanically abut each other.
  • a movable switching contact which is mechanically coupled to the manual switch button, by the movement of the manual switch button continuously to a housing-fixed switching contact approximated until the two switch contacts mechanically abut each other.
  • the EP 1 003 191 A1 describes a thermomagnetic circuit breaker with a mechanism in which, during a closing operation, an auxiliary lever holds the movable contact and then releases abruptly.
  • the US 3,239,621 A also discloses an electrical switching device with a snap-on mechanism.
  • the object of the invention is therefore to provide a switching device of the type mentioned, with which the mentioned disadvantages can be avoided, which has a long life and enables safe operation over a long time, and in which a high number of turn-on ensures the snap-on function can be.
  • the functionality of the snap-start function can be reliably ensured for a long time or via a large number of switch-on processes. This can ensure that when closing the switch contacts, therefore when switching the switching device, to a sudden closing of the switch contacts comes. It can thereby be achieved that the snap-on function takes place over many switch-on processes without significant changes. Due to the fact that the contact arm catching device does not have a low hardness or surface hardness than the contact arm extension, wear phenomena, in particular material removal, on the rocker switch can be avoided or reduced in such a way that there is no effect on the jump activation function. As a result, it can be prevented that due to material removal to a steady displacement of the breakpoint of the snap-switch device until, until the spring rocker can no longer hold the Kunststoffarmfortsatz, and the Snap-in device became ineffective.
  • the Fig. 1 and 2 each show a preferred embodiment of a switching device 1 with a housing-fixed contact 6 and a movable contact 4, wherein the movable contact 4 is arranged on a movably arranged in the switching device 1, contact arm 3, which contact arm 3 a, facing away from the movable contact 4 , Contact arm extension 5, wherein the movable contact 4 is provided for contacting the housing-fixed contact 6 and forming a conductive current path through the switching device 1, wherein the switching device 1 has a switching mechanism 2, which is connected to the movable contact arm 3, wherein the switching device further comprising a manual shift lever 7, which shift lever 7 is connected to the switch lock 2, wherein the switching device 1 further comprises a snap-on mechanism 8, which jump activation mechanism 8 a rotatably mounted, and controlled by a first cam 9 of the manual shift lever 7 rocker switch 10 with a Mixarmfangei device 11 for contact with the Mixarmfortsatz 5, wherein the Beneficiarmfang worn 11 has a surface hardness which is greater than or equal to
  • the functionality of the snap-start function can be reliably ensured for a long time or via a large number of switch-on processes. This can ensure that when the contacts 4, 6 are closed, therefore when the switching device 1 is switched on, the contacts 4, 6 suddenly close. It can thereby be achieved that the snap-on function takes place over many switch-on processes without significant changes. Due to the fact that the contact arm catcher 11 does not have a low hardness or surface hardness, as the contact arm extension 5, wear phenomena, in particular material removal, can be avoided or reduced at the rocker switch so that there is no effect on the snap-on function. This can prevent that due to material removal to a steady displacement of the breakpoint of jump snap mechanism 8 comes, until then, that the rocker switch 10 can no longer hold the Kunststoffarmfortsatz 5, and the snap-on mechanism 8 was ineffective.
  • the subject invention relates to an electrical switching device 1, wherein it is preferably provided that the switching device 1 as a protective switching device or as so-called.
  • the switching device 1 is designed approximately as a circuit breaker or circuit breaker.
  • the switching device 1 is designed as a compact low-voltage protection switching device.
  • the switching device 1 has at least one trigger 33 according to the preferred embodiment.
  • an electromagnetic release 33 is shown, such as a short-circuit release. It can also be provided in a known manner designed thermal release, such as a bimetallic release for overcurrent tripping. Furthermore, it may be provided to combine the respective triggers 33.
  • the switching device 1 has at least one movable contact 4, as well as at least one housing-fixed contact 6. According to the illustrated preferred embodiment, the switching device 1 has a so-called. Double interruption, and thus has two movable contacts 4 and two fixed contacts 6 contacts, which, however, are assigned a single switching path.
  • the switching device 1 has connection terminals, not shown. If there is no such electrically conductive connection through or over the switching device 1, this is referred to as switched off or as switched-off state. If the corresponding conductive connection exists, this is referred to as switched on or switched-on state. The transitions between the two states are accordingly, and as usual, referred to as switching on or off of the switching device 1.
  • the term closed contacts 4, 6 for switched on, as well as opened contacts 4, 6 for switched off can also be used synonymously.
  • the at least one movable contact 4 is arranged on a movable contact arm 3.
  • a movable contact arm 3 According to the preferred embodiment, the, in Fig. 10 separately shown contact arm 3, two movable contacts 4, which are arranged on each parallel fork-shaped extensions 34 of the contact arm 3, which can be drawn in this embodiment as a contact bridge or jumper.
  • the contact arm 3 has a contact arm extension 5, which according to the preferred embodiment is hook-shaped. According to the preferred embodiment, an end region 30 of the contact arm extension 5 is arranged substantially parallel to a central piece 31 of the contact arm 3. It can be provided according to the structural conditions of the relevant switching device 1 different angle.
  • the contact arm 3 has a bearing point 35, which is arranged between the at least one movable contact 4 and the contact arm extension 5, and is preferably designed as an opening.
  • the contact arm 3 is designed as a part through which current flows directly, preferably comprising a copper-based alloy.
  • the contact arm 3 is formed substantially in one piece, wherein only the two movable contacts 4 are formed as a support of a corresponding contact material. It can also be provided that the contact arm 3 is constructed in several parts, and only the directly current-carrying areas of the contact arm 3 are formed comprising a good conductive copper alloy, while the contact arm extension 5 is formed of a different material.
  • integrally formed contact arms 3 have been proven in terms of efficient production, but also in terms of a rigid structure.
  • the switching device 1 has a so-called switching mechanism 2.
  • the switching mechanism 2 is a mechanical arrangement which controls the movements of the contact arm 3.
  • the switching mechanism 2 has in the preferred and illustrated embodiment, in addition to the contact arm 3 further comprises a contact arm 19, a pawl 20 and a latch support 22.
  • Fig. 3 shows the corresponding modules released from the other components of the switching device 1 in axonometric view and in the off state.
  • the contact arm support 19, the contact arm 3 and the latch support 22 are movably mounted about a common switch lock rotation axis 23 in the switch lock 2, and each have corresponding openings or bearings on.
  • the three Parts are each arranged to be movable relative to one another.
  • two leg springs 36 are arranged according to the illustrated embodiment, which cause the contact pressure with closed contacts 4, 6, and press the contact arm 3 against the contact arm 19 with open contacts 4, 6, as in 4 and 5 shown. With closed contacts 4, 6 of the contact arm 3 is partially lifted from the contact arm 19, such as in Fig. 7 shown.
  • the pawl 20 is movably mounted about a pawl rotation axis 21.
  • the pawl 20 is connected via a bracket 37 or a rod with the manual shift lever 7 of the switching device 1.
  • the latch support 22 has a Verklinkungsstelle 24 for connection to the pawl 20. In the so-called latched state, therefore when the pawl 20 engages the pawl support 22, starting from a switched-off state of the switching device 1, a movement of the manual shift lever 7 is transmitted to the pawl 20 via the bracket 37. Since the pawl 20, due to the latch, can not escape or swing out, as a result of the movement of the manual shift lever 7, further the contact arm 19 and the contact arm 3 is moved.
  • the latch support 19 further has a window 27, through which the contact arm extension 5 engages, as well as a release extension 28, which is arranged in the switching device 1 opposite the release plunger 38 of the release mechanism 33, such as ind Fig. 1 and 2 shown.
  • the switching device also has a so-called. Sprungeinschaltmechanik 8. It has been explained above how, in the latched state, a movement of the manual shift lever 7 leads to a movement of the contact arm 3 and consequently of the at least one contact.
  • the snap-on mechanism 8 is provided, which the contact arm 3 at a predetermined approximation of the at least one movable contact 4 to the corresponding housing fixed contact 6 holds while the movement of the manual lever 7 is continued.
  • the 4 and 5 each show the relevant components in the off state.
  • Fig. 6 shows a position in which the contact arm 3 is held.
  • the contacts 4, 6 are in an isolation distance from each other, which can expect no rollover.
  • a certain position of the manual shift lever 7 is exceeded, there is a sudden bridging of this isolation distance and a closing of the contacts 4, 6. This can be prevented that it comes to the formation of an arc, which is sufficiently long to destroy the switching device. 1 respectively.
  • By the sudden closing of the contacts 4, 6 can also be ensured that the necessary contact pressure is available very quickly and not only slowly built, and there is no contact bounce.
  • the snap-on mechanism 8 has a rocker switch 10 which is rotatably mounted in the switching device 1 about a jump rocker rotation axis 25.
  • the rocker switch 10 has a so-called.
  • Grearmfang driven 11 which is provided for contact with the Mixarmfortsatz 5 or formed. It is provided that the Whyarmfang responded 11 temporarily holds the Whyarmfortsatz 5 at the isolation distance, and then releases specifiable.
  • the rocker switch 10 is controlled by a first cam 9 of the manual shift lever 7, wherein the manual shift lever 7 further comprises a second cam 26.
  • the rocker arm 10 is formed according to the illustrated preferred embodiment as a lever, the Whyarmfang noticed 11 is disposed on a first lever arm 16 of the rocker switch 10, and wherein a second lever arm 17 of the rocker arm 10 as actuating extension 18 for contact with at least the first cam 9 of the manual shift lever 7 is formed.
  • the rocker arm 10 is connected by means of a spring 29 with the contact arm 19.
  • the respective adjusting spring 29, which is preferably designed as a helical tension spring, acts on the rocker switch 10 on a pin 32, which is arranged slightly eccentric.
  • the second cam 26 presses against the second lever arm 17 the rocker switch 10, and presses the contact arm catcher 11 away from the contact arm extension 5.
  • the spring 29 is essentially free of tension in this position.
  • the contact arm 3 preferably rests against the contact arm catcher 11 with a first contact arm retention surface 14.
  • the contact arm catching device 11 has a surface hardness which is greater than or equal to a surface hardness of the contact arm extension 5, in particular of the first contact arm retaining surface 14.
  • the surface hardness of the Kunststoffarmfang noticed 11 is therefore at least as high as the surface hardness of the Kunststoffarmfortsatzes 5.
  • the surface hardness or simply the hardness indicates the resistance that the body or whose surfaces oppose the penetration of a test specimen. Due to the hardness of the contact arm catcher 11 relative to the contact arm extension 5, excessive wear of the contact arm catcher 11 can be avoided.
  • the relevant hardness or surface hardness is determined by the Vickers hardness test method.
  • the contact arm catcher 11 is formed comprising metal, wherein it is provided above all that the contact arm catcher 11 is formed comprising steel.
  • the contact arm catcher 11 is formed substantially rotationally symmetrical, whereby a good and low-friction sliding of the Whyarmfortsatzes 5 is given by the contact arm catcher 11. It has been found to be advantageous that the contact arm catcher 11 is formed as a round rivet and / or tubular rivet 12. According to the illustrated particularly preferred embodiment of a switching device 1, the contact arm catcher 11 is formed as a tubular rivet 12 made of steel. Such has, in addition to a simple manufacturability and implementability on a further high dimensional stability, whereby a shift of the isolation distance over many switching cycles can be prevented.
  • the contact arm catcher 11 is that the contact arm catcher 11, about its own Maisarmfang noticedsachse rotatably mounted in the rocker switch 10.
  • the contact arm extension 5 therefore rolls along the contact arm catcher 11, whereby the longevity of the arrangement can be further increased.
  • the end region 30 of the contact arm extension 5 has a rounding in the region which is provided for engagement with the contact arm catching device 11 when it is released. As a result, the wear on the contact arm extension 5 as well as the contact arm catcher 11 can be further reduced.
  • the contact arm extension 5 engages behind the contact arm catcher 11 when the two parts are engaged. It is provided that the contact arm catcher 11 is designed accordingly to allow such engagement behind. Accordingly, the contact arm catcher 11 preferably has a web-like structure which connects two side legs 39 of the rocker switch 10. Such is given in the preferred, rotationally symmetrical design of the contact arm catcher 11, as shown in the figures. In this case, the contact arm extension 5 engages behind the contact arm catcher 11.
  • the rocker arm 10 has a limit stop 13 in the area of the contact arm catcher 11 and that, when the contact arm extension 5 engages with the rocker arm 10, the first contact arm retaining surface 14 rests against the contact arm catcher 11 , And a second Whyarmhalte materials 15 abuts the limit stop 13.
  • the second contact arm holding surface 15 is preferably arranged substantially normal to the first contact arm holding surface 14.
  • the limit stop 13 prevents too far or deep penetration of the Whyarmfortsatzes 5 in the rocker switch 10. This allows the intended function of the snap-lock can be further secured.

Landscapes

  • Mechanisms For Operating Contacts (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Breakers (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)

Claims (9)

  1. Disjoncteur (1), en particulier disjoncteur de protection, avec un contact fixé au boîtier (6) et un contact mobile (4), dans lequel le contact mobile (4) est agencé au niveau d'un bras de contact (3), agencé mobile dans le disjoncteur (1), lequel bras de contact (3) présente un prolongement de bras de contact (5) opposé au contact mobile (4), dans lequel le contact mobile (4) est prévu pour la mise en contact du contact fixé au boîtier (6) et la formation d'un trajet de courant conducteur à travers le disjoncteur (1), dans lequel le disjoncteur (1) présente un verrou de maintien (2), lequel est relié au bras de contact mobile (3), dans lequel le disjoncteur (1) présente en outre un levier de commutation manuel (7), lequel levier de commutation manuel (7) est relié au verrou de maintien (2), dans lequel le disjoncteur (1) présente en outre un mécanisme d'enclenchement brusque (8), lequel mécanisme d'enclenchement brusque (8) présente une bascule à action brusque (10), logée mobile en rotation et commandée par une première came (9) du levier de commutation manuel (7), avec un dispositif d'interception de bras de contact (11) pour le contact avec le prolongement de bras de contact (5), dans lequel le dispositif d'interception de bras de contact (11) présente une dureté de surface, qui est supérieure ou égale à une dureté de surface du prolongement de bras de contact (5), et dans lequel le dispositif d'interception de bras de contact (11) est réalisé symétrique en rotation, caractérisé en ce que le dispositif d'interception de bras de contact (11) est réalisé en tant que rivet rond et/ou rivet tubulaire (12).
  2. Disjoncteur (1) selon la revendication 1, caractérisé en ce que le dispositif d'interception de bras de contact (11) est réalisé comprenant un métal.
  3. Disjoncteur (1) selon la revendication 1 ou 2, caractérisé en ce que le dispositif d'interception de bras de contact (11) est réalisé comprenant un acier.
  4. Disjoncteur (1) selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le prolongement de bras de contact (5) est réalisé en forme de crochet.
  5. Disjoncteur (1) selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le prolongement de bras de contact (5) vient en prise derrière le dispositif d'interception de bras de contact (11).
  6. Disjoncteur (1) selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le dispositif d'interception de bras de contact (11) est logé rotatif dans la bascule à action brusque (10).
  7. Disjoncteur (1) selon l'une quelconque des revendications 1 à 6, caractérisé en ce que la bascule à action brusque (10) présente une butée de limitation (13) dans la zone du dispositif d'interception de bras de contact (11) et que, en cas de mise en prise du prolongement de bras de contact (5) avec la bascule à action brusque (10), une première surface de maintien de bras de contact (14) s'appuie sur le dispositif d'interception de bras de contact (11), et une deuxième surface de maintien de bras de contact (15) s'appuie sur la butée de limitation (13).
  8. Disjoncteur (1) selon la revendication 7, caractérisé en ce que la première surface de maintien de bras de contact (14) est agencée sensiblement de façon normale à la deuxième surface de maintien de bras de contact (15).
  9. Disjoncteur (1) selon l'une quelconque des revendications 1 à 8, caractérisé en ce que la bascule à action brusque (10) est réalisée en tant que levier logé mobile en rotation, que le dispositif d'interception de bras de contact (11) est agencé au niveau d'un premier bras de levier (16) de la bascule à action brusque (10), et qu'un deuxième bras de levier (17) de la bascule à action brusque (10) est réalisé en tant que prolongement d'actionnement (18) pour le contact avec la première came (9) du levier de commutation manuel (7).
EP15723511.0A 2014-05-22 2015-05-19 Disjoncteur Active EP3146549B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014107266.9A DE102014107266A1 (de) 2014-05-22 2014-05-22 Schaltgerät
PCT/EP2015/060987 WO2015177143A1 (fr) 2014-05-22 2015-05-19 Appareil de coupure électrique

Publications (2)

Publication Number Publication Date
EP3146549A1 EP3146549A1 (fr) 2017-03-29
EP3146549B1 true EP3146549B1 (fr) 2018-11-14

Family

ID=53189821

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15723511.0A Active EP3146549B1 (fr) 2014-05-22 2015-05-19 Disjoncteur

Country Status (4)

Country Link
US (1) US20170178842A1 (fr)
EP (1) EP3146549B1 (fr)
DE (1) DE102014107266A1 (fr)
WO (1) WO2015177143A1 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1388664A (fr) * 1963-06-27 1965-02-12 Comp Generale Electricite Dispositif à fermeture indépendante pour appareils électriques
US4636760A (en) * 1985-04-10 1987-01-13 Westinghouse Electric Corp. Low voltage circuit breaker with remote switching function
EP0338930A1 (fr) * 1988-04-22 1989-10-25 Hager Electro S.A. Disjoncteurs ou disjoncteurs differentiels
EP1003191B1 (fr) * 1998-11-19 2006-01-11 ABB Sace S.p.A. Interrupteur magnétothermique
US6897747B2 (en) * 2002-05-10 2005-05-24 Joseph T. Brandon Circuit breaker
FR2923942B1 (fr) * 2007-11-16 2014-09-05 Schneider Electric Ind Sas Dispositif de commande d'un appareil de coupure electrique et appareil de coupure electrique le comportant
DE102012203295A1 (de) * 2012-03-02 2013-09-05 Siemens Aktiengesellschaft Schaltschloss für einen Leistungsschalter

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
US20170178842A1 (en) 2017-06-22
WO2015177143A1 (fr) 2015-11-26
EP3146549A1 (fr) 2017-03-29
DE102014107266A1 (de) 2015-11-26

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